I think that what sometimes gets lost in the "economics vs. racism" arguments re: Trump voters...
...is that most people - in fact, I would argue, the vast majority of American voters - have at best, highly idiosyncratic and deeply inconsistent/contradictory political views, and that this tends (though by no means universally) to be more true with lower levels of education, income, and of course, civic engagement.
And considering that Trump, while he won among every level of education and income in the Republican primaries, disproportionately won among Republicans with lower-than-average education and income (compare his numbers among primary voters without college degrees with those of, say, Kasich, Rubio, or even Cruz - it's ridiculous), and also, considering the fact that Republican voters (especially, Republican primary voters) have higher-than-average levels of income and (to a lesser extent) education (but only on paper, of course 
) compared to the general population and that Trump picked up a lot an alarming number of votes in the general election among working class, relatively modest-income white voters...well, you begin to see a pattern here!
The reality is that Trump's voters are motivated by all kinds of things, ranging from racism, xenophobia, sexism, misogyny, anti-Semitism, homophobia, transphobia, fear of terrorism (specifically, that from Muslims), and hatred of liberals and "political correctness" to resentment of the "welfare cheats and bums", "bad trade deals", the university-educated, Wall Street bankers, the "lyin', dishonest media", and "the swamp" in Washington D.C., and anything and everything else. His support is based on a constant litany of fears, resentments, and grievances that are hopelessly confused, schizophrenic, contradictory, authoritarian, and alarmingly proud in their illiberal, reactionary content - yet at the same time, are very often deeply and sincerely felt, at a gut, emotional level. It's a fucking mess!
There's no reasoning with the irrational. If anything, reason and logic backfire in this context. Sad, but true, IMHO. Not sure if there's a way to effectively fight it.
